{/**/}
New
100% Free
Dev Dojo.
Test yourself.
This is where Oracle developers come to sharpen their skills. Real bugs. Real SQL. Real APEX scenarios. Pick a challenge, see how you do, then go learn what you missed.
01
Live now
3+
Coming soon
∞
Skill ceiling
// choose your challenge
● Live
Fix the Bug
Broken PL/SQL and APEX code is shown. You find what's wrong and pick the right fix. 9 questions across 3 progressively harder levels.
Difficulty
Hassan's best: 270 / 270 pts
Coming Soon
Oracle Wordle
Guess the hidden Oracle or APEX keyword in 6 tries. A new word every day. Sounds simple — until you're on guess 5 staring at __ E X __.
Difficulty
Daily challenge — no spoilers yet
Coming Soon
SQL Quiz Blitz
10 SQL questions, 20 seconds each. No second chances, no going back. Pure speed and accuracy — how well do you know your Oracle SQL?
Difficulty
Hassan's target: 10 / 10 in under 90s
Coming Soon
Spot the Vulnerability
APEX application code with a hidden security flaw. SQL injection, XSS, broken auth — can you catch it before a real attacker does?
Difficulty
Hassan's target: Perfect detection rate
// on the roadmap
More challenges are coming.
APEX Config Quiz
PL/SQL Refactor
Query Optimizer
ACE Trivia
// hassan-raza · Oracle ACE Associate
Every challenge here is built from something I've actually seen go wrong in real Oracle projects. If you get something wrong, don't skip the explanation — that's the whole point. The blog has the full deep dive for every topic covered here.